Correct a typo
Correct a typo

change Conferences for Commitees to make it more clear that is it a list of PC/SC

pascalpoizat/pascalpoizat.github.io,freakonometrics/arthurcharpentier,pascalpoizat/pascalpoizat.github.io,freakonometrics/arthurcharpentier,pascalpoizat/pascalpoizat.github.io,pascalpoizat/pascalpoizat.github.io,freakonometrics/arthurcharpentier,freakonometrics/arthurcharpentier